Clamp attachment for wrenches.



E. HAKEY.

' CLAMP ATTACHMENT FOR WRENCHES. APPLICATION FILED JUNE 4. 1914.

Patented 0@1-,.19,1915.

Ilium u 'g laj; t

WITNESSES A TTOR/VE Y8 ELI HAKEY, or swAr-I'roiv, VERMONT.

Y CLAMP ATTACHMENT FOR VIRENCHES.

' Specification of Letters Patent. v

Patented Oct. is, 1915.

' Application filed June 4, 1914. Serial No. 842,891.

To allwhom it may concern. r

Be it known'that I, ELI HAKEY, a citizen of the United States, residing at Swanton, in the county of Franklin and State of Vermont, have invented a new and useful Improvement in Clamp Attachments for renches, of which the following is a specification. 1..

This invention relates to wrenches, and more particularly to a combination wrench and clamp.

.One of the principal objects of the invention is to provide a combination wrench capable of use as a monkey wrench, a pipe wrench, or a clamp. V I

Another-object of the invention contemplates the provision of ;.a wrench with aclamp mechanism carried by the movable 'jaw of the wrench; and capable of ad ustment relatively to the fixed wrench jaw. l V

A further object of the invention is to provide a clamp mechanism adapted to be carried byone of the jaws of a wrench'and adjustable with relation to the other jaw,

the. parts beingremovable so that the clamp mechanism may be taken off, and the handle and'shank of the wrench being so con structed that the handle may be'r'emoved' to provide for greater adjustment of the wrench and clamp.

j A further object of the invention is to provide a mechanism of the class described, which will be simple, durable, eilicient in operation, and inexpensive to manufacture. With these and other objects in view which will becomeapparent as the description proceeds, the invention resides in the construction, combination and "arrangement of parts, hereinafter more fully described,

and claimed and illustrated in the accomf 'panying drawing, in which'like characters of reference indicate like parts'throughout. the several figures', *of which- Figure 1 represents a side elevational view of a wrench equipped-with an attachment constructed in accordance with my invention, Fig. 2 represents a bottom plan view thereof. Fig.3 represents a vertical transverse sectional view taken on the plane indicated by the line 3-3 of Fig. 1. Fig. 4 represents a view similar to Fig. 3 taken on the plane indicated by the line 4-4 of Fig. 1, and Fig. 5 represents an elevational view of one end of the shank showing the same with the handle removed.

Referring more particularly to the drawtending parallel with the its lower surface plain and adapted to slide ing, the wrench includes a fixed jaw 5, se-

cured to the outer end of a flat shank 6, having a central longitudinal vlded therein and having its upper edge provided with teeth 8 for forming a rack, said shank capable of having secured to the end opposlte aw 5, a handle, comprising side pleces 9 connected at the rear ends by a cross piece 10 to which the side pieces are secured, said cross piece 10 adapted to fit w thin a notch 11 in the end of shank 6, said side pieces when in position being conslot 7 pronected by a bolt 12 extending through openingsin the side pieces and through s1ot7 in position on the shank, the upper edges of sald handle are flush with the upper edges of teeth 8 so that the latter do not project beyond the handle.

-A movable jaw 14 is provided, through an opening 15 in the-upper end whereof shank 6 extends, whereby the jaw is movable longitudinally of said-shank, and ex tending each side of the'upper end 16 at the end 13 thereof. Then the handle is v of the jaw is a tapered guide plate 17 ex over the upper edge of teeth 8 so that [he movable jaw is securely, braced against wedging movement relatively to the shank.

a slidable wrench jaw and is adapted to be used as such when the clamp jaw is unat tached from the wrench.

A pawl 19 having depending teeth 20,

is provided with spaced arms 21 pivoted at 22 on each sideof the rear end of guide plates 17, and said pawl carries a thumb piece 23 extending upwardlyfrom the pawl, said thumbpiece serving as a bearing for -one end of a coil spring 24, whose other end bears in a recess'in the rear end of.

plate 17 asat 25, the function of spring 24- being to normally maintain the teeth carshank and having The movable element 14 is in the nature of ried by the pawl in engagement with rack y teeth 8, whereby the 'movable jaw 14 is normally held against movement in adjusted position relatively to "the stationary jaw 5. By pressing against thumb piece 23 pawl 19 may be raised, whereby the movable jaw may be adjusted relatively to the stationary Jaw, and uponreleasing thepawl the later will engage the teeth for maintaining the jaws in adjusted relation.

clamp jaw 26 is disposed between the movable and stationary jaws, and is proface ofjaw 14,, said vided with a pair .of spaced arms 27' at as upper end, which embrace the ing through slot 7 in the shank, whereby the jaw is guided, and said jaw on one side is provided. with a guide plate 29 extending rearwardly and'slidably engaging one'outer guide plate 29 provided with a longitudinallydisposed slot 30,

through whichextendsa bolt 31 carried by' jaw 14, whereby the plate is guided in its movement relatively to the jaw.-

In order to operate the clamp jaw, aicam lever 32 is provided which has an e'n'larg'ged head '38 at its lower end, which head is pivoted on bolt 81 on the, outer faceof guide plate 29, the lever handle 34c e'xtendingabove the wrench imposition to be readily grasped by the operator. 'An arcuateslot 35is provided in the head 33, and said slot is adapted to work over a roller c86journaled on pin 37'which is secured-to guide plate 29, whereby as will moving'the cam lever 'towardor aways-from stationary j aw 38 of leveifhead 33,

the.,-beveled upper edge 40 pivis provided a rack 39,-and, a keeper oted'on a'bolt etl 7 and. is carried-by the 1novable jaw 14, is

adapted to co-act wlthi rack 39' in themanner indicated inFig. 1 in preventing move from aw '5,

ment of the, clamp jaw' jawa'y when 'the clamp jaw has been forcedinto'engagement with an object to be clamped-between the clamp-j aw and said immovable jaw, said keeper being provided with a tooth .42 adapted'to engage 39.; By lifting keeper" 1O by'means-of a thumb ,piece 13 carried thereby, said keeper will be moved out of engagement withrack 39'.

The clamp mechanismjis carried ,by the movable j aw- 14:, and may be moved bodily with said jaw, and the clamp mechanism having by adjustment of jaw 14: been placed in'suitable positionto engage the object to c be clamped against aw 5, the cam lever'may be operated to move 7 the object for clamping the same, the keeper the clamp jaw against 410 being operated as stated before to hold the clamp jawin ad usted position.

Thewrench can be used either'as a clamp V or an ordinary wrench while the clamp mechanlsm is in place on "said wrench, but

it will bedesirable when the wrench is to be V :F 'apix trims 3a may bepbtaind for V shank 6', and are connected by a removable bolt 28 eXtendbe readily understood by 5, the clamp jaw "will be'i moved away from or toward saidf jawi O'n which extends through slot the teeth of the rack 7 -*Washington, D30.

used as a pipe wrench, to: removetheclamp I i mechanism, this may be done by removing-the bolt 28; connecting the arms 27 of the clamp jaw the b0lt3'1 which connects thecam lever and through slot 7, and by removing guide plate29'with the movable jaw. 'When I T the wrench is used as a pipe wrench the;

movable aw14= mayibe forcedinto engagemerit-with the pipe by-hand, and held in adjusted position by reason'of Pa-Wll9;

The wrench handle as is obvious necessarily acts'as a limit to the range of move v ment of jaw lzawa'y from jaw 5,and'conse- V quently limits the range justment of the, clamping mechanism.

y r-en w i 1gv tioned may'have the play of the entire'length position throughout the length of the outer end thereof. 7 The opposing; surfacesof [jaws and 14: are

provided with bitingof-move'ment orad- 'teeth't forbiting into; c j

the surface of a-ipipeor otherobjectuporri whichjthe wrench is being ng ace amp i aw;

i. Although 11 have described the preferred embodiment} Y of my invention, I fmay. desire to make; such changes in the -construction,;

combination and arrangement of parts thereof Vas -do not depart from the spirit" of thje claim.

shank, a movable j aw, and a stationary aw, of a clamp j aw {arranged between the-mov;

jinvention'and; thescope of the appe'nded;

The combination with ia wrench I ableandstationarywrenchjjaws;a plate carried by the clan1p jaw eitending tu dinal slot,v a removable carried" by;

Z movablej aw andfeXten din-gth-rough the slot, a cam lever pivotedupon the pin, cooperat ing means between the camleverandclamp jaw for'a'djusting the latter relatively to the i,

stationary aw, and means for' maintaining jthe-clamp aw in adjustd position relatively to the statio ry JE Witness s}. a. i a V MILO W. B RNEY,

r FRANK'XV. Franc s.

I alongside f Y the movablejaw and provided witha longi the l 

